Vulnerability · Published Oct 15, 2026 · Assigned by VulnCheck
CVE-2026-111143Ansilove libansilove through 1.4.2 Out-of-Bounds Read via ansilove_xbin RLE Decoding
Medium 5.5
In plain English
A medium-severity out-of-bounds read in libansilove from ansilove. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 2% of all known vulnerabilities).
Severity (CVSS 3.1)5.5Medium
Exploit odds (30 days)0.1%top 97.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
Ansilove libansilove through 1.4.2 contains an out-of-bounds read vulnerability in ansilove_xbin() in src/loaders/xbin.c that lacks bounds checks for compressed run-length records. Attackers can supply a crafted compressed XBIN file ending in a control byte such as 0x7F to read past the input buffer, crashing applications that render untrusted XBIN art.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | libansilove | no fix listed | DEBIAN-CVE-2026-111143 |
| Debian:13 | libansilove | no fix listed | DEBIAN-CVE-2026-111143 |
| Debian:14 | libansilove | no fix listed | DEBIAN-CVE-2026-111143 |
| Ubuntu:22.04:LTS | libansilove | no fix listed | UBUNTU-CVE-2026-111143 |
| Ubuntu:24.04:LTS | libansilove | no fix listed | UBUNTU-CVE-2026-111143 |
| Ubuntu:26.04:LTS | libansilove | no fix listed | UBUNTU-CVE-2026-111143 |
| Ubuntu:26.10 | libansilove | no fix listed | UBUNTU-CVE-2026-111143 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| ansilove | libansilove | 0 – through 1.4.2 |
Weakness: CWE-125 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
References
- https://hackmd.io/@haind-pwn/libansilove-xbin-rle-oob-read-and-null-font-deref technical-description, exploit
- https://github.com/ansilove/libansilove/blob/f1b05447aa566aa4eef9b05ebf8c2aaf1e379cd3/src/loaders/xbin.c#L169-L241 technical-description
- https://github.com/ansilove/libansilove product
- VulnCheck Advisory: Ansilove libansilove through 1.4.2 Out-of-Bounds Read via ansilove_xbin RLE Decoding third-party-advisory